123012132221210 has 32 divisors (see below), whose sum is σ = 221627868556752. Its totient is φ = 49159070023680.

The previous prime is 123012132221183. The next prime is 123012132221233. The reversal of 123012132221210 is 12122231210321.

It can be written as a sum of positive squares in 8 ways, for example, as 28153434372361 + 94858697848849 = 5305981^2 + 9739543^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128901130 + ... + 1129010090.

Almost surely, 2^{123012132221210} is an apocalyptic number.

123012132221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123012132221210 is a deficient number, since it is larger than the sum of its proper divisors (98615736335542).

123012132221210 is a wasteful number, since it uses less digits than its factorization.

123012132221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212978.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 123012132221210 its reverse (12122231210321), we get a palindrome (135134363431531).

The spelling of 123012132221210 in words is "one hundred twenty-three trillion, twelve billion, one hundred thirty-two million, two hundred twenty-one thousand, two hundred ten".